Project ignores, MapReduce

* So I've tried to work on a different computer, and I realized, that my mapreduce copy wasn't being commited, because I had "lib" in .gitignore. So yeah - "lib" removed from .gitignore file (although I decided not to put mapreduce in "lib" directory anymore, but whatever).
* So now a copy of MapReduce is in the project tree.
Project make

* make.py refactored to no longer look for "lib" directory.
* make.py no longer crashes, when "build" directory does not exist.